A novel hierarchical hollow SiO 2 @MnO 2 cubes reinforced elastic polyurethane foam for the highly efficient removal of oil from water

Yuan, Dengsen; Zhang, Tao; Guo, Qingjie; Qiu, Fengxian; Yang, Dongya; Ou, Zhongping

doi:10.1016/j.cej.2017.06.144

Cited by 92 publications

(32 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To prepare SiO 2 @Mn x O y , the silica spheres (0.3 g) were dispersed in DI water (20 mL) at 30 C for 1 h using ultrasonication, 27 followed by the addition of KMnO 4 (0.015-1.8 g) or Mn(CH 3 CO) 2 $4H 2 O (or Mn-acetate, 0.15-1.8 g). Subsequently, the suspension was transferred to a Teon-lined stainless-steel autoclave-type reactor and heated to 150 C at a heating rate of 10 C min À1 ; the temperature was maintained at 150 C for 48 h. [28][29][30] The autoclave-type reactor was then cooled to room temperature under ambient conditions. Subsequently, the SiO 2 @MnO x (KMnO 4 ) and SiO 2 @-MnO x (Mn-acetate) core-shell structures were collected by centrifugation and washed ve times or more with ethanol and DI water.…”

Section: Preparation Of Sio 2 @Mno Xmentioning

confidence: 99%

SiO₂@MnO_x@Na₂WO₄@SiO₂ core–shell-derived catalyst for oxidative coupling of methane

Park

Choi

et al. 2020

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Preparation Of Sio 2 @Mno Xmentioning

confidence: 99%

SiO₂@MnO_x@Na₂WO₄@SiO₂ core–shell-derived catalyst for oxidative coupling of methane

Park

Choi

et al. 2020

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Cao et al investigated the PU sponge fictionalized with super‐hydrophobic nano‐diamond particles. Yuan et al thoughts that SiO 2 @MnO 2 cubes reinforced PU foam for the highly efficient removal of oil from water and the composite PU foam showed excellent elasticity. Kong et al studied the fabrication of hydrophobic Al 2 O 3 /PU foam for oil/water separation and it deduced that the absorption capacity of Al 2 O 3 /PU had good potential application in oil‐water separation.…”

Section: Introductionmentioning

confidence: 99%

Quantitative evaluation on oil diffusion mechanisms in nano‐organic‐montmorillonite modified caster oil‐based polyurethane foam for oil/water separation

Zhou

Huang

2020

Polymers for Advanced Techs

View full text Add to dashboard Cite

To improve the oil absorbency of caster oil-based polyurethane foam, nano-organicmontmorillonite (OMMT) was used for the additives. The aim of this study is to evaluate the oil diffusion mechanism and dispersion uniformity of OMMT modified caster oil-based polyurethane (MPU) using experiments and molecular dynamic simulation.Molecule movement and molecule trajectory of oil was investigated by molecular dynamic simulation and numerical simulation. According to the quantitative analyzing results, the diffusion model was put forward. The average diffusion coefficient of crude oil in 0, 1, 2 wt%, 4, and 6 wt% MPU is 2.4 × 10 −4 cm 2 /s, 2.6 × 10 −4 cm 2 /s, 3.0 × 10 −4 cm 2 /s, 3.2 × 10 −4 cm 2 /s, and 3.3 × 10 −4 cm 2 /s, respectively. It indicated that crude oil appeared gradient in the MPU. The optimal diffusion direction of crude oil is (0, 0, 1) crystal face, and the small particles of crude oil are easy to be adsorbed.The two-dimensional diffusion trajectory of crude oil is nonlinear. The diffusion model includes the diffusion of crude oil at the interface of oil and polyurethane, surface diffusion and pore diffusion, and pore adsorption. Furthermore, the diffusion model showed that the van der Waals force was the main reason for crude oil diffusion or adsorption. OMMT could improve the ability of oil/water separation of polyurethane. K E Y W O R D Sdiffusion mechanism, modeling and simulation, nano-organic-montmorillonite, polyurethane, quantitative evaluation

show abstract

“…Pan et al [23] and coworkers prepared hydrophobic polyvinyl formaldehyde sponges by one-step surface modification, but massive pyridine, a strong virose organic reagent, is involved as the solvent. Yuan [24] and coworkers designed a hollow SiO 2 @MnO 2 modified PU foam for high-efficiency oil-water separation; however, MnO 2 may introduce heavy metals (Mn 4+ ) and lead to secondary pollution. Given limits of the cases discussed above, we raised a facile and green one-pot synthesis of silylated PVA sponge for oil-water separation, possessing advantages (e.g., high porosity, stable structure, and low cost).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Superhydrophobic Polyvinyl Alcohol Sponge Using Water as the Only Solvent for Continuous Oil-Water Separation

Chen

Xiang

Yue

et al. 2019

Journal of Chemistry

View full text Add to dashboard Cite

Few cases of hydrophobic materials synthesized in water have been reported. In this work, water, as the only solvent, is used to prepare a superhydrophobic sponge via a facile and environment-friendly route. The as-prepared sponge, namely silylated polyvinyl alcohol (PVA) sponge, exhibits superhydrophobic and superoleophilic characters. It has the static water contact angle (WCA) of 152 ± 1 and the static oil contact angle (OCA) of 0°, which can lead to excellent selectivity for oil-water separation. Besides, the methyltriethoxysilane (MTES) can form a stable mixed structure with the PVA skeleton, resulting in the rare shedding of polymethylsiloxane nanoparticles and the long-term stability for oil-water separation. Furthermore, the silylated sponge shows a high separation efficiency (>99.6%), removing oil up to 6200∼14000 times of its own mass. The findings demonstrated that the silylated superhydrophobic sponge can be a promising candidate in water treatment application.

show abstract

A novel hierarchical hollow SiO 2 @MnO 2 cubes reinforced elastic polyurethane foam for the highly efficient removal of oil from water

Cited by 92 publications

References 22 publications

SiO₂@MnO_x@Na₂WO₄@SiO₂ core–shell-derived catalyst for oxidative coupling of methane

SiO₂@MnO_x@Na₂WO₄@SiO₂ core–shell-derived catalyst for oxidative coupling of methane

Quantitative evaluation on oil diffusion mechanisms in nano‐organic‐montmorillonite modified caster oil‐based polyurethane foam for oil/water separation

Synthesis of a Superhydrophobic Polyvinyl Alcohol Sponge Using Water as the Only Solvent for Continuous Oil-Water Separation

Contact Info

Product

Resources

About

A novel hierarchical hollow SiO 2 @MnO 2 cubes reinforced elastic polyurethane foam for the highly efficient removal of oil from water

Cited by 92 publications

References 22 publications

SiO2@MnOx@Na2WO4@SiO2 core–shell-derived catalyst for oxidative coupling of methane

SiO2@MnOx@Na2WO4@SiO2 core–shell-derived catalyst for oxidative coupling of methane

Quantitative evaluation on oil diffusion mechanisms in nano‐organic‐montmorillonite modified caster oil‐based polyurethane foam for oil/water separation

Synthesis of a Superhydrophobic Polyvinyl Alcohol Sponge Using Water as the Only Solvent for Continuous Oil-Water Separation

Contact Info

Product

Resources

About

SiO₂@MnO_x@Na₂WO₄@SiO₂ core–shell-derived catalyst for oxidative coupling of methane

SiO₂@MnO_x@Na₂WO₄@SiO₂ core–shell-derived catalyst for oxidative coupling of methane